National Dam Inspection Program. Taylor Pond Dam (NDI-PA 00315, PA DER 52-152, SCS PA-446), Delaware River Basin, Taylor Creek, Pike County, Pennsylvania. Phase I Inspection Report.

摘要

Taylor Pond Dam is a zoned earth and rockfill embankment, approximately 2,300 feet in length with a maximum height of 76 feet. The embankment is constructed with a change in alignment (78 degree bend) to the right, starting approximately 1,100 feet from the left abutment. The top of the dam is 22 feet wide at design Elevation 1829. The embankment side slopes are 2 horizontal to 1 vertical (2H:1V) both upstream and downstream. According to the as-built plans, the embankment is constructed in three zones. A central impervious core to Elevation 1821 and a cutoff trench extending to 22 feet below natural ground are composed of silt (ML) and clay (CL) materials (Zone 1). The core side slopes are 0.4H:1V and the top width is 10 feet. The cutoff trench has 1H1V side slopes and a 10 foot bottom width. Zone 2 material is an intermediate layer between the core and the shell and consists of silty sand (SM), silty gravel (GM), and cobbles from the designed borrow areas. Zone 2 extends to Elevation 1827 with a top width of 20 feet and side slopes which are slightly steeper than 2H:1V. Zone 3 material, which forms the upstream and downstream shells, is composed of rocks larger than 6 inches obtained from the Emergency Spillway excavation and oversize material raked out of Zone 1 and Zone 2 material.